Gameplay-wise, it looks sound, but this is very obviously an amateur effort with not much thought put into the aesthetic and how it might serve gameplay. As a mod, I'd forgive it, but as a paid product I'm surprised people are giving the maker such a free pass on it.
Yes, people are giving him a free pass, because they all must share your opinion and find it bad, never mind the people who have already posted they think it looks great, nope, that can't happen, opinions can't differ, he's just getting a free pass.
Jeez, try getting over yourself at some point. You said your opinion, others stated theirs, why not leave it at that instead of assume what people you don't know shit about are or aren't doing just to present your opinion as an objective fact?
I'm confident a lot of thought has gone into the visuals, whether you like them or agree with the direction is another matter. Even if it changes down the road that doesn't mean it was bad and people didn't like it before, even if they also like the change. Nor does it mean people only pledge on perfect products anyway, I'm sure you could see imperfections even if the color palette matched your tastes enough to not find it so offensive that other people who aren't you and like it enough to pledge on it.